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Showing 1 to 16 of 16 for “"mutual inductance"”.
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Control of Switched Reluctance Motors Considering Mutual Inductance
… (TDF) that also compensates the effects of mutual coupling. To describe the effects of mutual coupling between phases, a set of voltage and torque equations is newly derived for the two-phase excitation. Parameters of the SRM are obtained by Finite Element Analysis (FEA) and verified by …
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Electrical crosstalk in multilayer ceramic substrates
… ground type, and multilayer thickness. The mutual inductance and the mutual capacitance were calculated in order to use them in predicting crosstalk for particular transmission line geometrical structures. A conventional technique was used for the mutual inductance, and a new conformal …
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Continuous measurement of cervical dilatation during labour
… The principle of operation, being that of mutual inductance, utilises two coils, one on the posterior lip of the cervix and the other on the anterior, the axes of these coils being kept parallel by a flexible linkage. A magnetic field, from the primary coil being driven with a lOkHz …
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Enhanced wireless power transfer system modeling using reflection theory and magnetic circuit analysis
… designs, are analyzed, and a planar coil self-inductance model is developed using magnetic circuit theory. Tested at 3.7 kW, the model identifies peak efficiency points under varying load conditions by combining reflection theory with circuit analysis. Unlike previous models, it adapts to load …
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Poly-phase inductively coupled power transfer systems
… exposing several implementation challenges. Mutual inductance exists between the track phases, and can disrupt the power supply operation. A model is created to analyse this effect, and several methods are detailed which can be used to reduce or eliminate it. A steady-state loading model is …
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Efficient Magnetic Resonance Wireless Power Transfer Systems
… the value and shape of the coils; the mutual inductance, including the distance between the coils; and the load. These systems have four potential types of connection in the transmitter and receiver. These types are Serial to Serial (SS), Serial to Parallel (SP), Parallel to Serial (PS) …
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Study on Three-level DC/DC Converter with Coupled Inductors
… identifies the existence of multiple equivalent inductances during one switching cycle. A combination of them determines the inductor current ripple and dynamics of the system. By virtue of inverse coupling and means of controlling the coupling coefficients, one can minimize the current ripple …
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The Effect of a Field Shaper on Electromagnetic Forming of Aluminum Tubes
… work is required to generally determine the mutual inductance from the coil to the field shaper. Testing of a square tube formed only by coil and a finite element model demonstrated that even forming of a square tube would require a significant corner to side force ratio and may not be …
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Biopsy-implantable chemical sensor
… the NMR signal. The sensor and reader have a mutual inductance that enables the wireless measurement. The resonant coupling allows wireless NMR measurements with enhanced signal-to-noise ratio. The field inside the sensor is amplified compared to the surrounding tissue. The amplification …
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Design and Implementation of a Novel Control System for Four Quadrant Operation of a Two-Phase Switched Reluctance Motor
… regions of each phase, or use of the machines mutual inductance with both phases energized to produce enough torque to initiate motion. This project is intended to develop a variable speed controller for a 4:6 two-phase switched reluctance motor. The motor is to operate in all four quadrants, …
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Characterization and Failure Mode Analysis of Cascode GaN HEMT
… in this thesis. The packaging related parasitic inductance, including both self-inductance and mutual-inductance, are extracted based on finite element analysis (FEA) methods. Then the accuracy of the simulation model is verified by a double-pulse tester, and the simulation results match well …
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Design and Analysis of a Low-Power Low-Voltage Quadrature LO Generation Circuit for Wireless Applications
… the quality factor of the primary coil and the mutual inductance between the primary and the secondary coils play an important role in the trade-off between power and noise. The guidelines for determining the parameters of a transformer are developed. The proposed LO was fabricated in 65 nm CMOS …
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Transport AC loss in high temperature superconducting coils
… on inductive compensation by means of a variable mutual inductance. Measurements are carried out on the superconducting racetrack coil and it is found that the experimental results agree with the modelling results for low current, but some phase drift occurs for higher current, which affects the …
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Experimental and analytical study of electrical crosstalk in CMB cold readout systems and implications for power spectra
… associated with the bandwidth of the filters; mutual inductance crosstalk, arising from possible electromagnetic coupling between spiral inductors; and common impedance crosstalk, caused by the presence of a non-zero inductance in series with all the multiplexing branches. The LC filters chip …
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Unlocking SiC MOSFET Switching Performance Through Packaging and Instrumentation
… Wire-bonding introduces significant stray inductances into the transistor connections. When combined with high-speed switching, such inductance can cause device damaging voltage overshoots, unwanted resonances and parasitic turn-on of the transistor. Due to such effects, the switching speed …
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Modeling, Implementation, and Simulation of Two-Winding Plate Inductor
… in this dissertation in order to model the self-inductance, winding loss, and core loss. The most challenging task for the plate-core inductor is to model the magnetic field with finite core dimensions, very non-uniform flux pattern, and large fringing flux. The winding is placed near the edge of …